New Ads Will Stir Up Coffee Wars

The coffee war between Starbucks Corp. and McDonald's Corp. is coming to a boil this week, as the two chains launch national marketing campaigns.

Starbucks aims to persuade consumers that its coffee is superior to the competition's, while McDonald's is trying to build a quirky new brand around its mochas, hot cocoas, lattes and cappuccinos, with ads showing consumers how the drinks can brighten -- or "McCaf&eacute;" --...